robust all-metal flush valve with brass push button for 2 flush volumes, high operational reliability thanks to plastic cartridge and automatic nozzle cleaning needle, with pipe interrupter compliant with DIN EN 12541, flush volume: 1-1.3 l/s, flow pressure 1.2-5 bar, main flush volume adjustable 4.5-9 l, economy button 3 l, flush pipe connection 28 x 26 mm, water-carrying parts brass compliant with TrinkwV, test mark PA-IX 9902/I, DIN DVGW certified, noise class I